Applying or separating aspect: when an aspect is building and when it is fading

How do you know if an aspect is applying?

Start with one question: which of the two planets moves faster? That planet makes the aspect, catching up with the exact angle or leaving it behind. The slower one serves as the landmark, and the orb measures the distance still to cover, or already covered.

When both planets are direct, compare their degrees within their signs. Venus at 8° Gemini and Saturn at 13° Aquarius form a trine 5° from exact: Venus has not reached the 13th degree yet, so the trine is tightening. Mars at 22° Leo and Jupiter at 18° Scorpio form a square 4° from exact: Mars has already crossed the 18th degree, so the square is coming apart.

• The Moon covers about 13° a day, so it is nearly always the faster body.
• Mercury, Venus and the Sun move about a degree a day; Mercury and Venus speed up and slow down along their cycles, so their ranking shifts from one month to the next.
• Mars travels roughly half a degree a day, Jupiter and Saturn only a few minutes of arc.
• Uranus, Neptune and Pluto move so slowly that they almost always act as the fixed point.

The site does not rely on that textbook order: it compares the actual speeds of both bodies at the minute of birth.

Retrograde planets: when the degree rule flips

A retrograde planet appears to move backward through the zodiac, returning to degrees it has already crossed, so the comparison reads in reverse. Mercury retrograde at 15° Libra and Mars at 12° Capricorn form a square 3° from exact. Mercury may sit “past” the 12th degree, but it is backing toward it: the square is tightening.

Here Mars moves forward while Mercury moves back, and both motions push toward the exact angle. Traditional astrology calls this mutual application, an aspect that perfects more quickly. A stationary planet, on the other hand, barely moves at all and lets the other one set the direction alone.

What the direction adds to a natal reading

An aspect that was applying at birth was still forming. It reads as an energy in the making, something you grow into over the years and often feel with more intensity. The applying Venus–Saturn trine above describes loyalty under construction, a taste for things that last, ripening as life goes on.

A separating aspect had just passed its exact point. It reads more like something acquired: a way of doing things already settled, available without effort, so familiar you may stop noticing it. The separating Mars–Jupiter square weighs no less; it is drive already broken in, worth steering rather than winning.

Direction never replaces the orb. A separating square at 1° is felt more strongly than an applying trine at 6°: read the gap first, then the direction of travel, which shades the story without overturning it.

In transits: the build-up, the exact hit, the aftermath

In a transit, the planet in the sky moves while your natal point stays put, which makes the distinction very concrete. While the aspect is applying, the chart starts to stir, questions surface, the energy rises. At the exact pass, the transit is at full strength. Once it separates, integration takes over: what you went through settles into a lasting shape.

Slow planets make the picture richer. Through its loops, Saturn can approach a natal point, pass it, back over it while retrograde, then cross it one last time: the same transit turns applying, separating, then applying again over several months. Each pass picks the question up where the previous one left it.

Where your chart page shows the direction

Open “All the aspects and the houses”: the “All aspects” table lists each pair of planets with the aspect, its orb and a “Dynamic” column that reads applying or separating. Under one degree, the orb also carries the word “exact”.

On the wheel, tap an aspect line: its bubble shows the angle, the orb and, unless the aspect is exact, its direction. The “Your transits right now” block, for its part, writes “applying · tightening” or “separating · moving away” next to each slow-planet transit.

To single out one aspect, ask Vega “Show me my Venus Saturn trine”: the big wheel keeps only that line (Vega shows it on your wheel), and a tap reveals its direction. Vega knows the dynamic of every aspect in your chart, so you can ask her which ones are still forming.